State still investigating after excess cement dust from plant covers McKinney neighborhood
By Cassidy Ritter

Community Impact
July 26, 2019 

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One week after cement dust covered patios, lawns and cars in a McKinney neighborhood, state officials said they are still investigating the cause.

Officials confirmed it was cement dust released from concrete plant Martin Marietta, located along SH 5 in McKinney, sometime between July 18 and July 19. Much of the dust released fell in the McKinney Greens neighborhood located across from Martin Marietta.

For years, residents in the area have expressed concerns about dust and noise coming from Martin Marietta and two other industrial plants along Hwy. 5.

Texas Commission on Environmental Quality officials said they have not received information from the plant that details how much was released on July 18 and July 19. TCEQ regulates what is called particulate matter that gets released from the plant.

“Based on the information the TCEQ [Dallas-Fort Worth] Region has received to date, cement dust was released from one of the silos at Martin Marietta,” spokesperson Marty Otero said in an email to Community Impact Newspaper on July 26.

Because cement dust is corrosive, people should avoid direct contact with it, according to TCEQ’s Toxicology, Risk Assessment and Research Division. According to an email from TCEQ, “Once the dust is removed, this event is not expected to represent a long-term concern.”…………..

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